A paleoanthropologist in South Africa discovers the remains of fossilized skeletal humans. See more in this clip from Season 1, Episode 4, "Human Genesis." Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. ...

Stories of civilizations large and small disappearing without a trace can be found throughout history and across the globe. From a previously unknown civilization in China, a vanished race of giants, to the unexplained disappearances of the Classic Maya and the Anasazi. See more in Season 9, ...

Diggers unearth two giant bones and mysterious metal object that was created before humans even existed. See more in this clip from Season 21, Episode 4, "The Top Ten Unexplained Technologies." Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website ...

Check out these unbelievable ancient theories. See more in this Ancient Aliens marathon. Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great ...

Check out these top secret theories finally revealed. See more in this Ancient Aliens compilation. Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and ...

17 Indisputable Alien and UFO Sightings caught on camera! Shocking Footage! Are we alone in the universe? From the skies over New York's LaGuardia Airport to mysterious spheres diving into the oceans of Puerto Rico, these bizarre UFO sightings are as captivating as they are unexplained. Could ...

25 Clearest Alien and UFO Sightings Caught on Camera | Actual Footage. In this video, we're going to share with you some of the most incredible Alien and UFO sightings ever captured on camera. From strange lights in the sky to unidentified flying objects, this video is filled with proof of ...

Check out these unbelievable alien theories. See more in this Ancient Aliens marathon. Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other great ...

Check out these mind blowing area 51 theories. See more in this Ancient Aliens compilation. Watch full episodes and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. #AncientAliens Subscribe for more from Ancient Aliens and other ...

With infrared satellite technology detecting pyramids hidden underneath the sand in Egypt and airborne laser sensors discovering long lost pyramids beneath the jungles of Central America, many believe we have entered a new pyramid era--an age of discovery that will be marked by unimaginable new ...

Check out these sights that have never been discovered before! See more in this Ancient Aliens compilation. Ch1 - 0:00 - Cusco, Peru Ch2 - 3:33 - Thebes, Egypt. 1290 B.C Ch3 - 7:56 - Zone of silence Ch4 - 13:20 - 6,000 UFO sightings Watch full episodes and stay up to date on all of your ...

Mind-Blowing UFO Sightings That Cannot Be Explained Join me as we delve into the most Mind-Blowing UFO Sightings That Cannot Be Explained, featuring the most astonishing and unexplained aerial phenomena caught on camera. From UFO news to ancient aliens, we'll explore the most fascinating and ...